Re-named and cleaned up HelloWorldScene

Changed to GameScene
Cleaned up comments
Now inlcuding Box2d
Changing variable names
Merged
Revert "Added image base for map"

This reverts commit b515146b50efebcb613fff52160649a89cbaa979.
Revert to original
Merge branch 'master' of https://github.com/markhatch/MediocreMashBrahs